John Dalesandro

The Head Trimmer plugin for WordPress is a customizable plugin to remove automatically generated information from the HEAD element across a site. These extras add bloat to a website and expose WordPress version information as well as other potential security signatures in the generated source code.
Removal options include:
<ul>
<li>WordPress Version</li>
<li>WordPress Version from URLs for Scripts and Styles</li>
<li>Shortlink</li>
<li>Shortlink from HTTP response headers</li>
<li>Canonical</li>
<li>Relational Links for Posts Adjacent to Current Post</li>
<li>RSS Feeds</li>
<li>Really Simple Discovery Link for xmlrpc (rsd_link)</li>
<li>Windows Live Writer Manifest File Link (wlwmanifest_link)</li>
<li>oEmbed Discovery Links</li>
<li>REST API Link</li>
<li>REST API Link Header</li>
<li>Emoji Support</li>
<li>Global Styles and SVG Filters (duotone filters)</li>
<li>Gutenberg Block CSS Styles (or set ‘should_load_separate_core_block_assets’)</li>
<li>Classic Theme Styles (classic-theme-styles)</li>
<li>DNS Prefetch for //s.w.org</li>
<li>DNS Prefetch for Google Fonts //fonts.googleapis.com</li>
<li>jQuery</li>
</ul>

Head Trimmer

Customizable plugin to selectively remove WordPress version information, feeds, shortlinks, xmlrpc, emoji support and other miscellaneous extras from  …

iliasvlachos1

This plugin is usefull to website owners who share links from their website on Facebook. If you debug your website URL with the <a href="https://developers.facebook.com/tools/debug/" rel="nofollow ugc">Facebook Sharing Debugger</a> you might see a warning with the following message.
Missing Properties: The following required properties are missing: fb:app_id
This plugin inserts the required meta property with the given app_id. You have to create a facebook app to get the app_id!
To create a facebook app, visit <a href="https://developers.facebook.com/" rel="nofollow ugc">Facebook Developers</a>
<ol>
<li>Register or Login to your account.</li>
<li>Click My Apps, then click Create to create a new App</li>
<li>When the app is created and you are in the app dashboard click settings and select Basic</li>
</ol>
That is the App ID you need to copy.
On your WordPress Admin:
<ol>
<li>Download and activate the plugin</li>
<li>Go to Tools -> Fix missing FB app_id.</li>
<li>Paste the app_id you copied in the given field.</li>
<li>Click Save</li>
</ol>

Fix missing property app_id

This plugin inserts the fb:app_id meta property to fix the Facebook Sharing Debugger error «The following required properties are missing: fb:app_id»

Head Trimmer vs Fix missing property app_id